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Infrared measurements of atmospheric ethane (C2H6) from aircraft and ground-based solar absorption spectra in the 3000/cm regionA number of prominent Q-branches of the nu-7 band of C2H6 have been identified near 3000/cm in aircraft and ground-based infrared solar absorption spectra. The aircraft spectra provide the column amount above 12 km at various altitudes. The column amount is strongly correlated with tropopause height and can be described by a constant mixing ratio of 0.46 ppbv in the upper troposphere and a mixing ratio scale height of 3.9 km above the tropopause. The ground-based spectra yield a column of 9.0 x 10 to the 15th molecules/sq cm above 2.1 km; combining these results implies a tropospheric mixing ratio of approximately 0.63 ppbv.
Document ID
19850049086
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Coffey, M. T.
(National Center for Atmospheric Research Boulder, CO, United States)
Mankin, W. G.
(National Center for Atmospheric Research Boulder, CO, United States)
Goldman, A.
(Denver, University Denver, CO, United States)
Rinsland, C. P.
(National Center for Atmospheric Research Boulder, CO, United States)
Harvey, G. A.
(NASA Langley Research Center Hampton, VA, United States)
Devi, V. M.
(National Center for Atmospheric Research Boulder, CO, United States)
Stokes, G. M.
(Battelle Observatory Richland, WA, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: Geophysical Research Letters
Volume: 12
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
85A31237
Distribution Limits
Public
Copyright
Other

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